Modified version of Takei Naodar's feeder, which was a modified version of iRoberti"s feeder. -Added indicator so you can see what you're tension is set to-adjusted tension settings, zero tension is now possible up to full spring max tension.-revised outer casing at rear for 2 screws instead of 3, as well as made it symmetrical.-adjusted some tolerances-2 designs, one with stock tension screw and nut, another with socket cap screw and square nut.Step-by-step instructions includedWhile not a quick change feeder, this is a workhorse feeder. It is simple and just keeps working, period. It will feed flexible filaments, no problem. It has a huge range of tension adjustments for a wide range of filament diameters and types. Lots of credit to those guys for a great starting point in a reliable feeder design.Here are the links to their pagesTakei Naodar - https://www.youmagine.com/users/takei-naodariRoberti - https://www.youmagine.com/users/iroberti